Feed-roll for planing-machines.



No. 771,501. PATENTED OCT. 4, 1904.

- H. B. ROSS.

FEED ROLL FORPLANING MACHINES.

APPLIGATION FILED JAN-22s, 1904; Y

N0 MODEL. 2 SEEETS-SHBET 1.

PATENTED OCT. 4, 1904.

H. B. ROSS. FEED ROLL FOR PLANING MACHINES.

APPLICATION FILED JAN. 28, 1904.

2 SHEETS-SHEET 2.

NO MODEL.

macaw,

UNITED STATES Patented October 4, 1904.

PATENT OFFICE.

HARRY B. ROSS, OF BELOIT, WISCONSIN, ASSIGNOR TO THE BERLIN MACHINEWORKS, OF BELOIT, WISCONSIN, A CORPORATION OF WVISCON SIN.

FEED-ROLL FOR PLANlNG-MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 771,501, dated October4, 1904.

Application filed January 28,1904. Serial No. 191,008. (No model.)

To a, whom it may concern:

Be it known that I, HARRY B. Ross, a citizen of the United States,residing at Beloit, in the county of Rock and State of Wisconsin, haveinvented certain new and useful Improvements in Feed-Rolls forPlaning-Machines, of which the following is a specification.

This invention relates to sectional feed-rolls for planing and surfacingmachines, and has for its object to provide a sectional feed-roll thesections whereof are capable of independent yielding movement in adirection transversely of the shaft to accommodate themselves to sticksof lumber of different thicknesses and to irregularities of thickness inthe while a positive driving of the feed-roll is ef-i fected it ismounted to yield in a direction transversely of the shaft and whilecapable of use upon sticks of considerable variation in thickness theroll-section is so firmly held by its yielding connections to the shaftas to make it effective in feeding the thinnest sticks within its rangeof operation.

Referring to the drawings, which illustrate the preferredmechanical'embodiment of my invention, Figure 1 shows the driving-shaftwith three roll-sections applied thereto, the left-hand roll being inelevation and the intermediate and right-hand rolls being in midsectionon the lines :20 wand y y, respectively, of Fig. 2. Fig. 2 is a sideelevation of the roll-section, showing the shaft in cross-see elevationshowing a group of sectional rolls on the shaft and their application toa number of sticks of lumber of different thicknesses;

and Fig. 5 is an enlarged view similar to Fig. 3, but illustrating theeccentric position of the roll relatively to the shaft and moreparticularly illustrating the relative positions and operations of theintermediate driving-lugs.

In the drawings, 10 represents a feed-roll section in the form of a ringor short cylinder, which is provided on its inner periphery withinternally-projecting lugs 11 in suitable number, a series of eightbeing shown on each end of the ring' or cylinder disposed in pairs,alternate pairs of said lugs being apertured to provide bearings for thepins 12, which serve as pivots or anchors for the outer ends of a seriesof springs 13. These springs are of a generally-abbreviated helical formor type, more specifically designable as C-springs. The inner ends ofthe springs 13 are pinned to a driving-ring, which latter is preferablyand as herein shown constructed of two symmetrical members 14, keyed onthe drivingshaft 15 and each having an annular radiallyextending flange14, provided with drivinglugs 16, said members 14 also having integralinwardly-extending hubs 17 of such length that when abutted against eachother there is provided a space between the flange equal to or slightlygreater than the width of the springs. The two members of thedrivingring are secured together by the pins or rivets 18, which latterafford means for holding the inner ends of the springs. These flangesafford in conjunction with the driving-lugs a working space for thesprings, within which they are coiled or compressed when the outersection is moved with reference to the inner, and the sides of theflanges and lugs afford guides to prevent lateral movement of the outersection or feed-roll with'reference to the inner section ordriving-ring. The springs 13 are of such length and strength as tosupport the weight of the outer roll-section and to afford aconsiderable resistanceto pressure upon the feed-roll, which would tendto change its concentric relation to the shaft. It will be observed thatthese'springs are symmetrically arranged about the shaft and that eachspring is of such length as to extend through an arc of more than onehundred and eighty degrees. All of the springs when the parts areassembled are under tension, and consequently any force tending to varythe concentric relation of the feed-roll section to its shaft will beresisted by the combined action of all the springs. The tendency toupward movement of the feed-roll is of course due to its encounteringsticks of lumber of greater thickness than the normal distance betweenthe surface of the feed-roll and the bed or roll over which the lumberis being advanced. Under the normal tension of the springs thecooperating pairs of driving-lugs on the inner and outer members are inconstant contact when the feed-roll section is concentric with theshaft; but they are of such length relatively to the radial distancebetween the roll-section and driving-ring as to permit the necessaryplay of certain cooperating lugs in radial, tangential, and intermediatedirections and to permit of a facewise movement of adjacentroll-sections upon each other to adapt the feed-roll as a whole to thevarying thicknesses of lumber subjected to its operation.

Considering the relation of the parts as disclosed in Figs. 2 and 8, itwill be seen that the cooperating driving-lugs are in face engagement,the outer and inner sections of the roll being concentric to the shaft.Now if by reason of passing sticks of lumber of varying thicknessbeneath the roll, as shown in Fig. 4:, some of the roll-sections aredisplaced with reference to the others, and therefore vertically movedinto a position non-centric with the shaft, it will be seen that thedriving-lugs will be held in contact at one point as, for example, atthe mid-height on the right hand of Figs. 2, 3, and 5; but this willresult in a maximum separation of the lugs upon the opposite side of theroll and a less separation combined with a relative endwise movement ofthe intermediate pairs of cooperating lugs, as disclosed in Fig. 5. Themovement is not, therefore, a free bodily vertical movement of the outerroll-section with relation to the inner or driving ring, but rather acircular movement, the lixed point being that in which the twodriving-lugs have a facewise contact. For this reason it is importantto'provide a long spring which will permit of these varying movementswithout permanent set or distortion and which shall also afford amaximum yielding resistance to such displacement, whereby is secured therequisite pressure to feed the lumber. The flat O-spring shown anddescribed I find excellently adapted for these results, especially whena plurality of such springs symmetrically disposed are employed.

The invention is susceptible of considerable structural variation as tothe number of the springs and the mode of connecting them to the innerand outer sections and also as to the construction of thedriving-section. It will be observed that the compression and extensionof the springs take place in curved lines substantially concentric tothe axis of the shaft, and therefore substantially in the direction ofthe length of the spring. By reason of this fact the maximum power ofthe springs is availed of without liability to destruction of thesprings by reason of giving them a permanent set.

I claim 1. A sectional feed-roll comprising a driving-shaft providedwith driving connections rigid therewith, an outer roll-section providedwith cooperating driving connections, and one or more helical springsdisposed between the shaft and the outer roll-section and arrangedsubstantially coaxially with said driving-shaft, substantially asdescribed.

2. A sectional feed-roll comprising a driving-shaft provided withdriving connections rigid therewith, an outer roll-section provided withcooperating driving connections, and a series of C-springs disposedbetween the shaft and the outer roll-section, substantially asdescribed.

3. A sectional feed-roll comprising a driving-shaft provided withdriving connections rigid therewith, an outer roll-section provided withcooperating driving connections, and a series of symmetrically-disposedC-springs each extending through an arc of more than one hundred andeighty degrees disposed between the shaft and the outer roll-section,substantially as described.

4. A sectional feed-roll comprising a driving-shaft provided with adriving-ring having outwardly-projecting lugs, an outer roll-sectionprovided with inwardly-projecting lugs cooperating with said lugs of thedrivingring, and a series of C-springs connecting the outer roll-sectionwith said driving-ring, substantially as described.

5. A sectional feed-roll comprising a driving-shaft provided with adriving-ring having outwardly-projecting lugs, an outer roll-sectionprovided with inwardly-projecting lugs cooperating with said lugs of thedrivingring, and a series of symmetrically-disposed C-springs disposedbetween and at their opposite ends connected to said driving ring andouter roll-section, respectively, substantially as described.

6. A sectional feed-roll comprising a driving-shaft provided with adriving-ring having outwardly-projeeting lugs, an outer roll-sectionprovided with inwardly-projecting lugs cooperating with said lugs of thedrivingring, and a series of symmetrically-disposed 0-springs eachextending through an arc of more than one hundred and eighty degreesdisposed between and at their opposite ends connected to saiddriving-ring and outer rollsection, respectively, substantially asdescribed.

ring and outer roll-section, respectively, and" 10 a series ofsymmetrically-chsposed C-springs disposed between said driving-ring andouter roll-section and attheir opposite ends mounted on the pins carriedby the lugs of said drivingring and outer roll-section, respectively,substantially as described.

HARRY B. ROSS. Witnesses:

SAMUEL N. POND, L. F. MOCREA.

